title: Active modulation of refractive index by stress in the terahertz frequency range.
abstract: Experimental tests are presented to investigate the stress effect on terahertz (THz) waves with a THz time-domain spectroscopy system. Through the Jones matrix method, an experimental principle is derived according to the experimental system. Experimental results indicate the linear relationship between a polytetrafluoroethylene refractive index and applied stress. The result can be applied to the active modulation of a refractive index or phase of a THz wave.
authors.forename: Lin'an
authors.initials: L
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Wang
authors.forename: Shibin
authors.initials: S
authors.lastname: Wang
authors.forename: Mingxia
authors.initials: M
authors.lastname: He
authors.forename: Jiaguang
authors.initials: J
authors.lastname: Han
authors.forename: Longqing
authors.initials: L
authors.lastname: Cong